<!doctype html>
<html>

<head>
  <meta charset="utf-8">
  <title>Session storage size</title>
  <script>
    var dummy = {
      'dummy': 'This is some dummy data'
    };
    window.sessionStorage.setItem('dummy', JSON.stringify(dummy));
  </script>
</head>

<body>
</body>

</html>
